Help what do I do

Story
I can not tell by what you are saying that your wife may be unfaithful. If she is however I would collect as much evidence as possible without letting her know you are doing it.
I hope the problem is not as serious as it would appear. Look out for yourself and your bank account and assets. If this woman would commit adultry, then divorce her and let her new man take care of her.
Make sure you have the evidence first, courta usually don't award large sums of money to a wife who is divorced for adultry and being unfaithful. That said I hope if works out without going to this extent.
You must be feeling emotionally hurt by all this, best wishes to you!